A customer of mine asked me whether or not it is possible to physically move disks to another disk enclosure without data loss. Is this possible and if yes, are there restrictions (if any) to this actions?
The AMS platform has a feature that moves data from one set of volumes to another without disrupting the hosts. It's called Volume Migration. For example:
1) Create new RAID groups & new volumes
2) Reserve new volumes for migration
3) Perform migration
4) (Optional) Delete old volumes & RAID groups
Rob Koper, what is the reason for swapping the HDD's? Do you have enough spares configured in the array?
Enough spares are present. It's just an open question to see if it's possible, in the end they might decide not to do it if there are risks.
They want to have whole RAID Groups in a single disk enclosure instead of spread over >1 enclosure and they have some free space to play with. I'm not very familiar with AMS anymore (used to work with 2 USP-Vs and 6 AMSs until 2 years ago), but they asked if I knew the answer. I'm more active in the EMC area nowadays and with the new VNX you actually can swap disks without triggering rebuilds to hot spare, so I am curious if this is possible on an AMS 2500 as well.
I have a query,
to perform the migration,
1. do we need a license for volume migration
2. how to reserve new volumes for migration
If you'd like more details on Volume Migration, see the guide: Hitachi Storage Navigator Modular 2 Storage Features Reference Guide for AMS.
Thanks Dang Luong.
Rob Koper, It's not advised to pull out two HDD's at a time, It may lead to data loss. If you have such scenarios, please go with what Dang Luong has advised.
AMS would not allow you to move already configured disks.
Retrieving data ...